I park my car outside and I noticed a small spot of rust on the roof. There is area about 7mm in width where the paint is chipped and spotted with rust.
I am not sure what to do about it. I thought of getting a paint pen from SuperCheapAuto, but the store assistant was not helpful and would not go out and take a look (neither for advice, nor to tell me which paint pen would be the closest match). I am a car n00b so not sure what to do, go buy a full kit of color matched paint, primer and clear coat and sandpaper ... or take to a panel beater. Or is there a cheaper option for such a small bit of rust?